Working with ESP32

• Connect the Q43 GNSS Helical RTK Module to the ESP32 via UART. Also, connect the antenna and place the setup outdoors in an open area, or at least position the positioning antenna receiver under a clear view of the sky for testing. The pin connection reference table is as follows:

  ESP32-S3	Q43 GNSS Helical RTK Module
  GND	GND
  GPIO17	SDA
  GPIO18	SCL
  GPIO9	TX1
  GPIO8	RX1
  3V3/5V	VCC

• This guide uses the ESP32-S3 for testing. Set up the ESP32-S3 environment, and modify the following parameters in the example code.

  //Connect ESP to WiFi to enable access to base station server data
  const char* ssid         = "mate60";   // Wi‑Fi SSID
  const char* wifiPassword = "131433";   // Wi‑Fi password
  
  // ---------- NTRIP (using Hi‑Target CORS as an example; modify accordingly) ----------
  const char* ntripHost  = "120.253.226.97";
  const int   ntripPort  = 8001;
  const char* mountpoint = "RTCM33_GRCEJ";
  const char* ntripUser  = "cvmh11286";
  const char* ntripPass  = "fyxxx";

• Download the program. Locate GetGPS-RTK.ino in the Q43-GNSS-Helical-RTK-Module\ESP32\GetGPS-RTK folder, compile and flash the program to the ESP32-S3. The RTK rover positioning test result is shown in the figure below:

  

• Running the QMC5883P.ino example provides the magnetic field intensity along the X, Y, and Z axes in the environment, as shown below: